December weather forecast
Toyohama, Japan

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Weather in December

The first month of the winter, December, is still a cool month in Toyohama, Japan, with an average temperature ranging between min 8°C (46.4°F) and max 11.6°C (52.9°F).

Temperature

The beginning of December involves a decrease in the average high-temperature, transitioning from an enjoyable 16.9°C (62.4°F) in November to a cool 11.6°C (52.9°F). Throughout December, a modest shift from daytime highs is anticipated in Toyohama, Japan, with an average low-temperature of 8°C (46.4°F).

Humidity

The average relative humidity in December in Toyohama is 69%.

Rainfall

In Toyohama, during December, the rain falls for 7.5 days and regularly aggregates up to 35mm (1.38") of precipitation. In Toyohama, during the entire year, the rain falls for 142.8 days and collects up to 891mm (35.08") of precipitation.

Sea temperature

In December, the average sea temperature in Toyohama, Japan, is 17.5°C (63.5°F).
Note: In water of 17.5°C (63.5°F), the majority of people do not enjoy swimming. Breathing becomes increasingly hard to manage as the temperature drops from 21°C (69.8°F) to 15°C (59°F).

Daylight

The month with the shortest days in Toyohama is December, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 06:41 and sunset at 16:41. On the last day of December, in Toyohama, sunrise is at 06:59 and sunset at 16:51 JST.

Sunshine

In Toyohama, the average sunshine in December is 6.1h.

UV index

The months with the lowest UV index in Toyohama are January through March and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum daily UV index of 3 during December morphs into the following directions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

What is the average December temperature in Toyohama?

In December, in Toyohama, the average high-temperature is 11.6°C (52.9°F), and the average low-temperature is 8°C (46.4°F). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in August is calculated to be 35°C (95°F).

What is the average humidity in December in Toyohama?

In December, the average relative humidity in Toyohama is 69%.

How much does it rain in Toyohama in December?

In December, the rain falls for 7.5 days. Throughout December, 35mm (1.38") of precipitation is accumulated.

What is the sea water temperature in December in Toyohama?

In Toyohama, in December, the average water temperature is 17.5°C (63.5°F). For most, swimming in 17.5°C (63.5°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the month with the shortest days in Toyohama?

With an average of 9h and 54min of daylight, December has the shortest days of the year.

How many hours of daylight does Toyohama have in December?

The average day length in December is 9h and 53min.

What time are sunrise and sunset in December in Toyohama?

In December, on the first day of the month, sunrise is at 06:41 and sunset at 16:41. On the last day of the month, in Toyohama, sunrise is at 06:59 and sunset at 16:51 JST.

How long on average sun shines in December in Toyohama?

The average sunshine duration in December in Toyohama, Japan, is 6.1h.

What is the month with the lowest UV index in Toyohama?

The months with the lowest UV index in Toyohama are January through March and December, with an average maximum UV index of 3.

What is the UV index reading in December in Toyohama?

In Toyohama, the average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.

Average temperature in December
Toyohama, Japan

Average temperature in December - Toyohama, Japan
  • Average high temperature in December: 11.6°C

The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (9.1°C).

  • Average low temperature in December: 8°C

The month with the highest average low temperature is August (25.9°C).
The coldest month (with the lowest average low temperature) is January (5.2°C).

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Average pressure in December
Toyohama, Japan

Average pressure in December - Toyohama, Japan
  • Average pressure in December: 1018.2mbar

The month with the highest atmospheric pressure is November (1018.9mbar).
The month with the lowest atmospheric pressure is June (1009mbar).

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Average wind speed in December
Toyohama, Japan

Average wind speed in December - Toyohama, Japan
  • Average wind speed in December: 24km/h

The windiest month (with the highest average wind speed) is January (25.1km/h).
The calmest months (with the lowest average wind speed) are July and August (13.7km/h).

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Average humidity in December
Toyohama, Japan

Average humidity in December - Toyohama, Japan
  • Average humidity in December: 69%

The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January and February (68%).

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Average rainfall in December
Toyohama, Japan

Average rainfall in December - Toyohama, Japan
  • Average rainfall in December: 35mm

The wettest month (with the highest rainfall) is October (142mm).
The driest month (with the least rainfall) is January (26mm).

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Average rainfall days in December
Toyohama, Japan

Average rainfall days in December - Toyohama, Japan
  • Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (6 days).

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Average sea temperature in December
Toyohama, Japan

Average sea temperature in December - Toyohama, Japan
  • Average sea temperature in December: 17.5°C

The best month for swimming (with the highest average sea temperature) is August (27.1°C).
The coldest months (with the lowest average sea temperature) are February and March (14.6°C).

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Average daylight in December /
Average sunshine in December
Toyohama, Japan

Average daylight in December / Average sunshine in December - Toyohama, Japan
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 6h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

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Average sunshine days in December
Toyohama, Japan

Average sunshine days in December - Toyohama, Japan
  • Average sunshine days in December: 22.7 days

The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is August (12.2 days).

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Average UV index in December
Toyohama, Japan

Average UV index in December - Toyohama, Japan
  • Average UV index in December: 3

The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 3).

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Average cloud cover in December
Toyohama, Japan

Average cloud cover in December - Toyohama, Japan
  • Average cloud cover in December: 30

The month with the most cloud cover is June (Cloud cover 41).
The months with the least cloud cover are January and August (Cloud cover 29).

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Average visibility in December
Toyohama, Japan

Average visibility in December - Toyohama, Japan
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).

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Toyohama, Japan

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